The three-day event is set to begin Sunday and run through Tuesday

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Olympic swimmer Michael Phelps and actor Ashton Kutcher are among the sports stars, celebrities, business icons, musicians and fashion designers expected to attend the Forbes Under 30 Summit in Boston.

The summit is expected to bring together thousands of global entrepreneurs at different venues around Boston, including Faneuil Hall and campuses of Harvard Business School, Emerson College and Northeastern University.